The S52B32 is a 3.2 L petrol inline-6 from BMW's S52 family, built 1996–2000 and rated at 240 hp and 320 Nm. It powered the BMW E36 M3 US and BMW Z3 M.
This guide is about the S52B32 specifically: its specification, the cars that use it, how it differs from the other S52 versions, what to check, prices from our stock and fitment answers for each model. For the history of the whole family, read our S50 and S52 guide.
- Capacity and layout: 3.2 L, inline-6, naturally aspirated
- Output: 240 hp and 320 Nm
- Production: 1996–2000
- Fitted to: 2 models across 2 chassis generations
- In our stock: ask the desk for the next arrival
S52B32 specifications
| Item | Value |
|---|---|
| Engine code | S52B32 |
| Family | S52 |
| Capacity | 3.2 L |
| Layout | Inline-6 |
| Fuel | Petrol |
| Aspiration | Naturally aspirated |
| Power | 240 hp |
| Torque | 320 Nm |
| Specific output | 75 hp per litre |
| Production | 1996–2000 |
| Models | 2 |
Built from 1996 to 2000, the S52B32 displaces 3.2 L in an inline-6 layout and is naturally aspirated. It produces 240 hp and 320 Nm on petrol. That is about 75 hp and 100 Nm per litre, a strong figure for a road engine of its era. It was fitted to the BMW E36 M3 US and BMW Z3 M.
What the code S52B32 means
- S marks an S-series code, reserved for engines developed by BMW M.
- 52 is the family number.
- B stands for petrol (from the German Benzin).
- 32 is the capacity in decilitres, so 3.2 litres.
Which BMW models use the S52B32
| Model | Generation | Built |
|---|---|---|
| BMW E36 M3 US | third 3 Series | 1990–2000 |
| BMW Z3 M | Z3 roadster and coupé | 1995–2002 |
In the E36 third 3 Series (1990–2000), the S52B32 powered the M3 US. Engines from other models fit the E36 as long as the sump, mounts and ancillaries match, which we check against your VIN. All E36 engines
In the Z3 Z3 roadster and coupé (1995–2002), the S52B32 powered the M. Engines from other models fit the Z3 as long as the sump, mounts and ancillaries match, which we check against your VIN. All Z3 engines
Common S52B32 problems
The S52B32 shares its weak points with the rest of the S52 family. These are the faults to check on a used unit and on your own engine. The full explanation of each is in the S50 and S52 guide.
| Known fault | What to check |
|---|---|
| Oil pump nut | Ask whether the oil pump nut has been secured. |
| VANOS (S50B32) | Listen for rattle at idle and check for fault codes. |
| Cooling system | Look for a recent cooling refresh. |
| Valve cover and oil leaks | Check the front of the head for oil. |
Valve cover and oil leaks. Gaskets harden and leak, especially around the VANOS unit.
S52B32 maintenance
- 10W-60 synthetic is common for S50 engines; 5W-30 Longlife for S52, about 5.5 to 6.5 litres.
- Oil every 10,000 km; valve clearances for S50 every 30,000 km; VANOS service every 100,000 km.
- Duplex and single timing chains at the front.
Will the S52B32 fit my car?
Will the S52B32 fit my BMW Z3 M?
The S52B32 is the original engine for the BMW Z3 M, which makes it the straightforward choice. The Z3 roadster and coupé was built 1995–2002, and the S52B32 was produced 1996–2000, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.
How much is a replacement engine for a BMW Z3 M?
We do not have an S52B32 on the shelf for the Z3 M at the moment. Units arrive regularly; send us your VIN and we will tell you when the next one is ready and what it will cost, including delivery.
S52B32 prices
We do not have an S52B32 on the shelf at the moment. Send us your VIN or the code you need and the desk will tell you when the next unit arrives and what it will cost.
Buying a used S52B32: checklist
- Photographs from every side. Good suppliers photograph the actual engine you will receive. Look for the block stamp, the sump, the timing cover and any broken brackets or connectors in the pictures.
- Confirm the exact engine code. Read the code stamped on the block and compare it with the code for your car. Send us the last seven characters of the VIN and we confirm the match before anything is paid.
- List of what is fitted. Engines are sold with different ancillaries: some have the turbo, injectors, manifolds, alternator and starter, others are long blocks. Agree the list in writing so you know which parts must come from your old engine.
- Look at the oil and coolant. Clean oil without metal particles and coolant without oil are good signs. Milky oil, oily coolant or a burnt smell mean the engine needs further checks before it is fitted.
- Why your old engine failed. Before fitting a replacement, find out why the original failed. An overheating radiator, a blocked intercooler or a failed turbo can destroy a second engine if they are not fixed.
- Timing chain noise. Listen for a rattle at the front of the engine for the first seconds after a cold start. On an engine that cannot be run, look at the chain guides through the oil filler or with the valve cover off.
- VANOS operation. Rough idle, a rattle from the front of the head and a loss of torque at low revs point to VANOS seals or solenoids. These are serviceable parts and are easier to renew with the engine out.
- Bearing and valve clearance history. M engines are built to tighter tolerances. Ask for the last rod bearing replacement and valve clearance check, and consider an oil analysis if the engine can be run.
Questions about the S52B32
Will the S52B32 engine fit my BMW E36 M3 US?
Yes, if your BMW E36 M3 US was built with the S52B32. BMW used this 3.2 liter (3,152 cc) petrol engine with 179 kW (240 HP) in the E36 M3 US from about 1996 to 1999.
In our records the S52B32 is the engine for the E36 M3 US, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your E36 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all S52 Engines · Search S52B32 in the shop
How much is a replacement S52B32 engine for a BMW Z3 M US?
A used S52B32 for the BMW Z3 M US costs from about 3.850 € to 5.950 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The S52B32 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all S52 Engines · Search S52B32 in the shop
How much does a used BMW S52B32 engine cost?
A used BMW S52B32 engine in our yard usually costs between 3.850 € and 5.950 €. The exact price depends on the year, the mileage and the parts that come with the engine.
Our units show recorded mileage from about 22,000 km up to around 200,000 km. Lower mileage and more ancillaries mean a higher price. Each listing shows its own price, and the price you see is the price you pay. Prices include VAT for private buyers.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. If you order a gearbox or a second engine on the same order, the fee is still charged once.
Inside the EU there is no import duty. For the UK and other non-EU countries, import duty and local VAT are paid by the receiver, and we supply a commercial invoice.
See all S52 Engines · Search S52B32 in the shop
Can you check if an S52B32 fits my car with my VIN?
Yes, and it is free. Send the 17-character VIN of your car and, if you have it, the gearbox code. We check the engine family, the build year window and the parts your car needs.
For the S52B32, we confirm that your car was built with this code or with a version that can take it. BMW used it in the BMW E36 M3 US and BMW Z3 M US.
We only reserve an engine once the match is confirmed, so you never pay for the wrong unit. You can reach the Hamburg desk by email at autowerkeengines@gmail.com, or by phone and WhatsApp on +49 15510 030835, Monday to Friday, 9:00 to 16:00 CET.
You can also use the VIN check on our site. It reads the year, the make, the model and the engine from the public vehicle register.
See all S52 Engines · Search S52B32 in the shop
How much is a replacement S52B32 engine for a BMW E36 M3 US?
A used S52B32 for the BMW E36 M3 US costs from about 3.850 € to 5.950 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.
A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The S52B32 you buy is photographed and checked in Hamburg before it is listed.
Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all S52 Engines · Search S52B32 in the shop
How do I know a used S52B32 engine is in good shape?
Each engine in the yard is inspected in Hamburg. The code is matched to the listing, the parts on the engine are recorded, the openings are sealed and the real unit is photographed. An inspection certificate for the unit can travel with the order when you ask for it.
When you look at a listing, check the recorded mileage, the year and the photos of the ports and the stamp. Ask for photos of anything you want to see closer. Ask the desk for more pictures of any listing. We are happy to show the stamp, the ports and the ancillaries before you decide.
On a petrol engine like the S52B32, a careful fitter will also look at the spark plugs, the coils and the timing side before the engine goes in.
If the engine fails inside under normal use, the warranty covers you. Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop.
See all S52 Engines · Search S52B32 in the shop
How long does delivery of an S52B32 engine take?
Orders confirmed before 14:00 CET on a working day leave Hamburg the same day. Later and weekend orders leave the next working day. Delivery to the Netherlands, Belgium, Germany, France, Luxembourg and Denmark takes 1 to 3 working days.
Spain, Italy, Portugal, Poland, Czechia, Austria, Ireland, the Nordics and the Baltics take 2 to 5 working days. Greek and Spanish islands, Malta, Cyprus and remote areas take 4 to 8 working days. The UK and other countries outside the EU are quoted one by one.
Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.
You get a tracking number when the pallet is collected. Check the wrapping before you sign, and note any damage on the paperwork.
See all S52 Engines · Search S52B32 in the shop
What should I replace when I fit a used S52B32 engine?
A used engine lasts longest when it starts life in your car with fresh fluids and new seals. Check the spark plugs and the ignition coils, and make sure the fuel lines are clean and tight before you crank the engine. Fit a new oil filter and fresh oil of the grade BMW lists for this engine, and refill the coolant with the correct BMW antifreeze mix. Use new gaskets for the exhaust manifold, the intake and the sump plug, and check every hose clip before the first start.
Look at the engine mounts and the clutch or the torque converter while the engine is out. Old mounts can crack a new engine's brackets, and a worn clutch is much easier to change now.
Before the first start, turn the engine over without fuel until the oil pressure light goes out. Then let it idle, check for leaks, and drive gently for the first few hundred kilometres.
The warranty asks for fitting by a qualified mechanic and the correct oil, coolant and filters. Keep your receipts in case you ever need to make a claim.
See all S52 Engines · Search S52B32 in the shop
Are there other versions of the BMW S52B32?
In our yard the S52B32 is the only listed version of the S52 family. It makes 179 kW (240 HP) and 320 Nm, and was built from 1996 to 1999.
Engines in one family share a basic block, but the turbo, the injection, the sensors and the engine computer can differ. A higher power version often has different pistons, a bigger turbo or a different fuel system.
This is why we ask for the exact code. Fitting a different version can work, but the wiring, the software and sometimes the gearbox must be changed to match.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all S52 Engines · Search S52B32 in the shop
Does a used S52B32 engine come with a warranty?
Yes. Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop.
The warranty does not cover damage from wrong fitting, overheating, low oil, wrong fluids or fuel, engines that were opened or modified without our approval, or labour and towing costs.
To claim, send us your order number, a short description of the problem, photos or a video, and a mechanic's report if we ask for one. If the claim is approved, we repair, replace or refund the engine.
Keep the receipts for the fitting, the oil and the filters. They make any claim quick and simple.
See all S52 Engines · Search S52B32 in the shop
Is the BMW S52B32 a diesel or petrol engine?
The S52B32 is a petrol engine. It is a 3.2 liter (3,152 cc) inline 6, DOHC, 24 valve unit with no turbo (naturally aspirated), and it was built to the US emission standard.
The emission standard matters for registration and for low-emission zones in many cities. When you replace an engine with the same code, the car keeps the same paperwork and the same emission class.
Petrol versions need the correct catalytic converters and oxygen sensors on the car to stay legal and to keep the engine computer happy. Reuse the parts from your car if they are in good condition.
If you are not sure which version you need, send us your VIN. We tell you the right code for free.
See all S52 Engines · Search S52B32 in the shop
What is the BMW S52B32 engine?
The BMW S52B32 is a 3.2 liter (3,152 cc) petrol engine from the S52 family. It has an inline 6, DOHC, 24 valve layout with no turbo (naturally aspirated), and makes 179 kW (240 HP) with 320 Nm of torque. BMW built it from 1996 to 1999 and it meets the US emission standard.
You find the S52B32 in the BMW E36 M3 US and BMW Z3 M US. What we list: BMW S52 engines from the North American E36 M3.
At Autowerke Engines every S52B32 is a real used engine from our yard in Hamburg. Before a unit is listed, the yard checks the engine code against the listing, writes down the parts fitted to it, seals every opening and photographs the real engine you will receive. Each listing shows the year, the mileage and the price, so you can compare units side by side.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all S52 Engines · Search S52B32 in the shop
Will the S52B32 engine fit my BMW Z3 M US?
Yes, if your BMW Z3 M US was built with the S52B32. BMW used this 3.2 liter (3,152 cc) petrol engine with 179 kW (240 HP) in the Z3 M US from about 1996 to 1999.
In our records the S52B32 is the engine for the Z3 M US, which makes the match simple. Still, check the code on your old engine or send us your VIN.
Also tell us if your Z3 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all S52 Engines · Search S52B32 in the shop
What comes with a used S52B32 engine?
Each S52B32 is sold as described on its own listing. The yard writes down the parts that are fitted to that unit, such as the turbo, the injectors, the manifolds or the alternator, so you know what arrives.
Some units are long engines with few ancillaries, others are more complete. If you need a part that is not listed, ask the desk. We often have the matching items in the yard.
Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.
On delivery, the carrier brings the pallet to the kerb or a loading bay. Please have a forklift, a pallet truck or an engine crane ready.
See all S52 Engines · Search S52B32 in the shop
How much power and torque does the BMW S52B32 have?
From the factory the BMW S52B32 makes 179 kW (240 HP) and 320 Nm of torque. It is a 3.2 liter (3,152 cc) inline 6, DOHC, 24 valve petrol engine with no turbo (naturally aspirated).
Without a turbo, the power builds smoothly with the revs. A clean air intake, healthy ignition and the correct fuel are key to getting the full figure.
A used engine reaches its factory numbers when it is fitted with the matching engine computer and software, and serviced with the right oil and filters. If the engine computer from your car is a different version, a specialist may need to code it.
Every S52B32 on our site lists its year and mileage. Ask the desk for more pictures of any listing. We are happy to show the stamp, the ports and the ancillaries before you decide.
See all S52 Engines · Search S52B32 in the shop
Which cars use the BMW S52B32 engine?
BMW fitted the S52B32 to the BMW E36 M3 US and BMW Z3 M US. These cars were built with this engine from about 1996 to 1999.
The badge on the boot is not enough to be sure. The same model name can hide two different engines, for example after a facelift or a change in emission rules. Always read the engine code stamped on the block, or look it up with your VIN.
The S52B32 is the only S52 version we list, which makes it easy to pick, but the wiring and the engine computer still need to match your car.
Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.
See all S52 Engines · Search S52B32 in the shop
Delivery, warranty and payment
Before an S52B32 leaves our Hamburg yard it is drained of oil and coolant, every opening is sealed, and it is strapped to a pallet and wrapped. We send photographs of the packed unit and the tracking details.
Delivery is door to door and included in the price. Most European addresses receive the engine within five to ten working days; Germany and its neighbours are usually faster.
Every engine carries a 12-month warranty on eligible internal failure when a qualified workshop fits it with new fluids and filters. Payment is by card, bank transfer or crypto; your invoice is emailed as soon as you order.
S50 and S52 engine guide · All S50 and S52 engines · Send us your VIN
